Cylinder lock



J. H. SHAW CYLINDER LOCK Jail. 1, 1935.

Filed Nov. 10, 1928 f Patented Jan. 1,1935 I 1 9' 45g or-for' other purposes. w

1,986,453 .lohn I- I."-S]iaw, NeW HavenQ Conn ass'ignor to Sargent;&.0ompai1y, NevvHaven, Conn. '1 "Application itiga e-lie, 1928, Serial Ne. 318,449 i 11'c1ai1 ii.f writ-415 Y @My invention. relates to acylincler lock and Fig. 4 is aperspective view, showing the sevmore especially to a cylinder lockwhich the'i eral parts'of the lock detached from one another; operative partskmay bemade readily accessible Fig. 5 is a sectionalview,along line 5-5 of in orderio C ge the, combination of thej lock, Fig.5 2; and i i i i i Ithas heretofore beenproposed to provide pin Fig. 3. t 3 I tumblerlocks in whicha lock core'is removably Referring then to the drawing in which I have secured within a lockhousing by-key:operated illustrated my inventiomby showing a preferred means The usuallock ofythis character; has embodiment thereof, the reference numeral been provided withpin tumblershaving three or; indicates, in general, my. improved cylinder lock 10 i more sections, wherein 'certain'ofithe divisions which comprises an outer shell ll "inwhich is or. breaks in thetumblers are; aligned by. a key mounted a key plug housing 12 containinga key during the normal operatien ofgthelock, and in; plug lti, housing 12 and plug 13 being provided which other divisions or breaks are aligned by; with a plurality .of normally aligned cylindrical a master or control key yvhen the secondarylockopenings 14 in1which are received sectional pin 15 ing system is .tobe actuated to bring aboutthe. tumblers 15, pin tumblers 15 being urged towards detachment of the locl; ;parts.;.;- 1 w the axis-of keypluglB by means of compression ul r asp einvention contemplates; springslfi.

certain novel features and anovelfarrangement Receivedwithin therear endofshell f11 a Fig. 6 is a sectional view, along line 6 6"of.

of asecondary locking. systemyfor...detachable cap or end plate 117 having mounted therein a, 201

locks,,without regard to the character of thepri rotatable collar 18, collar 18 having mounted marylocking system used. thereon by suitable means a rollback l9,the.par-. .In a more specific aspect a n objectofthe in- 'ticular securing means shown herein comprising ventionis .to provide a lock in. which-only one screws 20. Collar18 is slotted at 21,: for the r setof divisions or breaksin-pin tumblers is neces.- reception of a tenon 22'on' the EIIdiDf keyplug 25.

sary, andinwhich the pin tumblers are adjusted 13 by means of whichrollback 19.may be rotated by a masterkey into the same position during the upon rotation of plug 13. 1 Key plug 13 is proreleasingofthe lock mechanism for detachment vided withthe usual opening23 inwhich the as they. are during the normal operation of the bit 24 of key 25 may be received, the key 25 being lock. i H i i In the secondary lockingsystem. of myimmy ccpending Patent No.-1,821,361,-granted Sepproved cylinder lock', I'propose.to provide means tember 1, 1931, bit .24 being provided with elonwhich,I-while inaccessible to an o'rdinary key; gated flat'notches 26 adapted to align pin tumh w v pr p t latt may. align the ,pin blers 15, whereupon thekey plug and rollback y tumblers, may. be reached by a part of..a special may be rotated. j on controllkeyto actuate the parts ofthe sec- Key 'plug housing 12 is secured against movenda y oc n sy te to release the several parts merit in one direction in shell 11 by means of of thelockibr detachmentj 1 end plate 17, theiadjacent end-of shell 11 being My improvedfcyl der lock is preferably underspun over plate 17, as at 1ZTLand in the opposite 3 the control of .apin tumbler or otherlockmechadirection by means of face plate 28 on which are 40:

nism, however, and the control keyiin the premounted pins 29-and 30 which, when the cylinferredlform' must properly align the pin tumblers der lock is assembled, extend through cylindrior otherwise adjustthe primary lockingsystem caliopenings 29* and 30 in shell 11 and engage before the. secondary locking systemumay be ring 31, which is normally received in slots 32 and a di ,1. .1 1

. To these and other ends,the invention consists tween shoulder 11 on shell 11 and the adjacent in the-novel features and combination of parts endofplate 17.: Q tofbe hereinafter described and claimed. In order; thatthe lockmechanism may be (18'.-

, In the drawing, i tachable,ring 31 is cutaway at 34 and 35 to generally otthe form disclosed and claimed in 301;

33 in pins 29 and30, ring,31 being mounted be- 45 Fig. 1 is a general view of a cylinder '10ck'acprovide openings which, WheIl'bTOllght opposite 507 cording to my invention; pins 29and"30,per mit the latter to be withdrawn Fig. 2 is a sectional view of the cylinder lock from shell 11, ring 31 being also provided with shown in Fig. 1, but on an enlarged scale; an opening 36 in which the end of a master or Fig. 3 is a sectional view, along line 33 of control key may be received in order to release Fig. 2; I or look the secondary locking system. When the 55 i in alignment with opening 23 when the mechathis position, rotation of key 25 and key plug @135] will produce rotation in ring 31, whereuponflthe nism is locked. v

The notches on key align pin tumblers 15 so that the key plug may be rotated by means of key 25. Key plug 13 is rotated until key 25 is opposite opening 36; whereupon the control key may beinserted a further distance intoxkey'plug 13, the end of the key entering opening 36. In

latter may be rotated to bring openings 34 and opposite pins 29 and 30;whereunoniaceplateand the several parts of the lock. disassembled. In order to limit the movement of ring 31pin with an opening38 in its periphery in which the pin 37 i s received,- the ends of the opening cooperating- 'with-the pin to limit themovement-of It will be readily understood that theshell- 11 is th'readed;as at- 39, in the usual manner so that it may be used in any usual form of clock-case; the usual longitudinally extending slot or slots 40 being provided in which the endofthe customary lockingscrew or screws may be received.

From the above description ofthe nature of my invention and the preferredmea'ns for carrying-it out,-itwill be seen that I have provided a relativelysimple form-of readily detachable lock mechanism in which the usual pin tumbler i or other key controlled lock maybe used.- While I have chosen to described my invention with particular reference to a pin tumbler type of lock, it will be readily understood that-the in vention may; be carried out with other forms of locking mechanisms, and the inventionis thus in I no way dependent upon the-particular type of primary loCkingmechanism used.

While I-haveshown a preferred embodiment of my invention, it will be understood that it is not to' be limited to all'thedetails shown, but is capable of modification andvariation within the spirit of the invention and the scope of the ap extending through the casing beyond the core,

means to releasably secure the face and: key controlled means engaging the extending casing.

2; In a cylinder lock, a casing, a core contained insaid casing, a face plate for holding the core in the casing, a pin mounted on the face plate and extending through an opening in the casing, and keycontrolled meansm'ounted in the casing adapted to engage a pin to secure the face plate tothe casing.

3".'-'-In a cylinder lock, a casing, a corecon'tained insaid casing, and'key controlled means for releasablyretaining said core in the casing, said means including a face plate, a pin on said face plate extending through the lockcasing beyond the core, a 'slot inthe end of said pin,-and key operable means mounted inthe casing adapted to be received in the slot.

4. 'In a. cylinder lock, a casing, a corecontained plate to the in said casing, and key controlled means for releasably retaining said core in the casing, said means including a face plate, a pin on said face plate extending through the casing and beyond the core, a slot in the end of said pin, a ring mounted in said casing and normally received in the slot, said ring being provided with an opening adapted to receive the end of a key inserted through: the core and said? ring being P ovided with an opening which: may be' brought into alignment with the end of the pin upon rotation of 5.In' a cylinder lock, a casing, a pin tumbler locking mechanism: said casing, the pin tum- 28 may be withdrawn from the/cylinder; lock blers ofrsaidvmechanism being provided with a single setof breaks,,and key operable means reengageableby a key inserted in the locking'mechanism to be moved into releasing position. 6. In afcylinder--lock, -ai'casing,--a rollback;

mounted at one end of said casing, a locking mech anism in said casing for operating said rollback;

and means carried bythe casing for releasably retaining said lockingmechanism in said casing, said means including a part engageableby' a key;

'' inserted inthe locking mechanism to be movedvv into-releasing position.

7. In a cylinder look, a casing; ,a rollback mount eel; at onendof said casing,' -a locki'ngmechanism in' said casing for; operating said rollback,- Jand' meanscarr-ied by the casingandoperable by a key inserted in said lockingme'chanismj for releasably.

retaining said'locking mechanism in saidcasing,

said means including a rotatable element mounted in the casing and -'separable from the locking mechanismi- 8. Ina cylinder look; a" casing, said casing in-.

eluding-separableparts, a rollback mounted at one end of said casing,- locking mechanism mounted between said parts? for operating said rollback, and means carried by sa'idpartsand operable'by a key inserted in thelocking mechanism for releasably securing'saidparts together.

'9. In a cylinder lock, a two-part'casing, a roll-' back mounted at one end of said casing, locking mechanism mounted within said casing between said parts for operating, said rollback, androtatable means for locking said parts together, said meansbeing engageable by a key received in the lock mechanismto be rotated; into releasing po-,

sition. a a

10; A door lock unit of cylindrical shape com prisingjtwo sectionspone of which is adapted to be secured to the door, and a rollback carried by said section, the other of said sections being re movably securable to the first section and containing a key operated plug; means for operably connectingthe plug to the rollback, and key'op-f erated means for securing said sections together.-

11; A'door lock comprisinga cylindrical section adapted to be secured to-a door and having a rollback movably mounted on the rear end thereof and a forwardly facing chambena second section insertable into the chamber and having-a keyoperated plug, means to connect the-plug to the rollback, and key operated means for securing'the sections together.

JOHN H. SHAW." 

